Sum from two Tables based on From-To Date criteria

I have two spreadsheets that are in two tables. In each tab is same table format. And here is the problem. In each table has date and data column. And I just try to create a formula that sums values between two dates where the first date is the oldest date that I dont want to enter (so it must to be in formula) and date that I input manually. So only one criteria (TO date) need to enter, but I am confused how to calculate from two tables if sumif sumproduct and sum doesnt work as I expected. Is this possible in general to resolve? I have attached a sample.

Re: Sum from two Tables based on From-To Date criteria

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Work like a charm. God bless you.</p>